I'm sorry for you, man. I've been through this just a year before. It was a 6 year relationship. She moved out, i'm still in the apartment, i think for the same reasons, you don't want to leave it.
Both of us don't have new partners, but we were getting real friends through the last year, both feeling better the way it is now.

If you can't get her back, don't get yourself in a hurry to find someone new. This needs time, a lot of sometimes...

Uhhh, think positive...

cheers, Thomas